Hi All, Just installed a new email server with OpenBSD 7.2 + Postfix and Cyrus. Essentially we copied our existing configuration and did some testing, everything seemed to be working fine. However, we noticed that while local delivery (from Postfix to Cyrus IMAP) via the Postfix lmtp daemon succeeds, it also logs this error: "250 2.1.5 Undefined error: 0 ..." Any ideas why this would happen? An undefined error of "0" seems slightly weird (to me). Here's an example of the complete message (anonymised) from the mail log: > ... > Dec 29 15:23:25 hostname72 postfix/lmtp[14149]: < hostname72.domain.tld[/var/spool/lmtp_to_cyrus/lmtp_socket]: 250 2.1.5 Undefined error: 0 SESSIONID=<imapd-1672323805-14314-2-8426998674014886225> > Dec 29 15:23:25 hostname72 postfix/lmtp[14149]: E551545A1D: to=<user@xxxxxxxxxx>, orig_to=<user@xxxxxxxxxx>, relay=hostname72.domain.tld[/var/spool/lmtp_to_cyrus/lmtp_socket], delay=0.44, delays=0.15/0.01/0/0.28, dsn=2.1.5, status=sent (250 2.1.5 Undefined error: 0 SESSIONID=<imapd-1672323805-14314-2-8426998674014886225>) > ... The first line shows Postfix receiving that message/string "250 2.1.5 Undefined error: 0 SESSIONID..." back from Cyrus IMAP. Again, the messages are delivered, apparently successfully, as show by the 250 and the 2.1.5 status codes. The question is why is the additional "Undefined error: 0" being generated? Does this represent a problem? Obviously we'd like to find out more about what is going on before we switch to using this system for production :-). Version info: dna72# uname -a OpenBSD hostname72 7.2 GENERIC.MP#4 amd64 dna72# pkg_info | egrep -i '(cyrus|postfix)' cyrus-imapd-3.4.4 Cyrus IMAP server cyrus-sasl-2.1.28 RFC 2222 SASL (Simple Authentication and Security Layer) postfix-3.7.2p1-sasl2 fast, secure sendmail replacement postfix-policyd-spf-perl-2.011 basic Postfix policy engine for Sender Policy Framework (We also tried this with a Postfix 3.8 snapshot version, same behaviour.) ------------------------------------------ Cyrus: Info Permalink: https://cyrus.topicbox.com/groups/info/T600bf9558ef43c65-Mf1f820b4859d3777e014f1db Delivery options: https://cyrus.topicbox.com/groups/info/subscription